Characteristics of Soil and Vegetation in Post-Landslide Area of Bonglo Village, Luwu, South Sulawesi
DOI:
https://doi.org/10.29244/jitl.28.1.28-35Keywords:
Soil Characteristics, Landslide, Vegetation, Importance Value IndexAbstract
A landslide is a natural event characterized by the significant downslope movement of rock and soil masses. This corresponds to the recent landslide that occurred in Bastem, which also resulted in casualties. This study aims to analyze soil and vegetation characteristics in the landslide-affected area of Bonglo Village, Bastem Utara District, Luwu Regency. The research applied a purposive sampling method across nine plots (three in landslide areas and six in vegetated areas). Soil samples were analyzed for texture, permeability, bulk density, plasticity, organic matter, and pH, while vegetation was assessed using the Importance Value Index (IVI). Results revealed variations in soil texture, namely sandy loam, loamy sand, clay loam, and sandy clay loam. Permeability was highest in P2 (165.3 cm/hr) and P3 (78.6 cm/hr), and lowest in P5 (0.6 cm/hr). Bulk density ranged from 1.03 g/cm³ (P4) to 1.75 g/cm³ (P2). Soil plasticity varied from highly plastic to slightly plastic. The highest organic matter content was found in P2 (2.06%). The observed soil pH ranged from 6.0 to 6.9, indicating slightly acidic to near-neutral conditions that are generally favorable for plant growth and microbial activity.Vegetation was dominated by Pinus at the tree level (IVI 67.97%) and ferns at the seedling level (IVI 32.44%). These findings emphasize the role of soil physical properties and vegetation in slope stability and highlight the importance of bio-physical-based mitigation strategies in landslide-prone areas.
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Department of Soil Science and Land Resources Departemen Ilmu Tanah dan Sumberdaya Lahan, Faculty of Agriculture Fakultas Pertanian, IPB University
